Gas production of yeast in the presence of glucose and succinate. In this experiment, yeast will be exposed to either a glucose or succinate solution to view their effects on gas production. Time (min) glucose (ml) succinate (ml) control (ml) As expected, the control sample produced no gas. When looking at the glucose sample, the yeast was able to produce co2 quickly and abundantly. This is due to glucose being a part of the initial aerobic reaction that the yeast has. Since the experiments started in an oxygen-available environment, the aerobic reaction would begin, and therefore, the glucose is expected to be used readily. The succinate sample was only able to make a small amount of gas in the two hours. As succinate is not part of this initial reaction, it would not be used quickly. Succinate, however, is part of an anaerobic reaction that the yeast undergoes.